Improvement in manufacture of glass



c l ffy UNITED STATES PATENT OEETCE.

IMPROVEMENT IN MANUFACTURE OF GLASS.

Speciiication forming part ot' Letters Patent No. 4E,065, dated January 5, 18M.

To a/ZZ whom it may concern.-

Beit known that I, JOHN L. GILLrLAND, of the city of Brooklyn, in the county of Kings and State of New York, have invented certain new and useful Improvements in the Manufacture of Glass; and I do hereby declare that the following; is a full, clear, and exact description of the same, reference being had to the accompanying drawings, forming part of this specification, in which- Figure l is a vertical section of a glass-fun.

Eig. 2 is a glass while being finished is not exposed to the fumes of sulphur, or to smoke, dust, or any other deleterious agency.

It also consists in providing in the outer shell of a glass-furnace a system of air-fines, which are open at the top and bottom, on the exterior of the shell or cone, the lower opening being arranged at a suitable distance from the floor of the glass'house for the reception of the heated and impure air, and the upper ones for the discharge of such air above the root` of the house, and the said iiues serving both for the ventilation and cooling of the house and for the reduction of the excessive heat ofthe shell ofthe furnace.

I will now proceed to describe the furnace loy the aid ofthe drawings.

A is the outer shell of the furnace, coustructed either round, square, or other form in its transverse section, and with arches, a. c, for working, and forthe introduction and removal of the pots when necessary. B is the dome within which the pots C O are arranged, constructed with arches b b, to correspond the drawings.

with the arches a a of the outer shell or cone, A. The pots C C are constructed like the covered pots commonly used for melting 'flintglass, and may he ot' any size, and they are arranged one opposite each arch, in the manner which is usual in the melting-furnace, their mouths d d being within the arches b b. The arches b b are closed and luted in the usual manner after the insertion of the pots. The flre trom the eye c of the furnace circulates under the dome among and around the pots, and the smoke and gaseous products of' combustion pass oft' to the chimney E by ues d d, formed on one side ot' each arch a, the said lues receiving the smoke and gases at the bottoms ofthe arches and delivering them above the dome. The fuel used may be of any kind.

In a furnace thus constructed the mouth d of each pot constitutes what is termed a gloryhole,7 and each pot can be used for the manipulation and finishing of all kinds of glassware with a very superior result, as the covered pots protect the glass perfectly from the smoke, fumes, and dnstof the furnace.

e c are the Ventilating and cooling tlues provided iu the shell A, and opening in the eX- terior thereof, as shown in Fig. 1. The lower openings, 3 3, ot' these flues are near the door of the house, and the upper ones, 4 4, vare at such a height as to be above the roof of the house. The rootl is, however, not shown in The upward draft in these ilues, induced by the heat of the shell, causes the i eated and impure air to escape from the house by means of the said ilues. and the air so escaping cools the shell in some degree.

Vhat I claim as my invention, and desire to secure by Letters Patent, is

The employment, for the finishing of glassware, of a furnace and pots, substantially as herein described.

JOHN L. GILLILAND.

Vitnesses Tiros. S. J. DOUGLAS, GEO. W. REED. 

